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Detecting an “invalid date” Date instance in JavaScript
I'd like to tell the difference between valid and invalid date objects in JS, but couldn't figure out how:
46 Answers
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How do I get the day of week given a date?
...ocumentation:
Return the day of the week as an integer, where Monday is 0 and Sunday is 6.
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How do you kill all current connections to a SQL Server 2005 database?
...at you are looping over the active connections new one can be established, and you'll miss those. You could instead use the following approach which does not have this drawback:
-- set your current connection to use master otherwise you might get an error
use master
ALTER DATABASE YourDatabase SET...
How to annotate MYSQL autoincrement field with JPA annotations
...ect Operator into MySQL DB.
Prior to save, I try to select from this table and it works, so is connection to db.
10 Answers...
Convert data.frame columns from factors to characters
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Just following on Matt and Dirk. If you want to recreate your existing data frame without changing the global option, you can recreate it with an apply statement:
bob <- data.frame(lapply(bob, as.character), stringsAsFactors=FALSE)
This will...
How to display double quotes(") Symbol in a TextView?
...racters (eg double quotes) with a backslash :
"message \"quote string 1\" and \"quote string 2\" end message"
But in views xml (eg layout.xml), you have to use HTML character entities (like &quot;) :
"message &quot;quote string 1&quot; and &quot;quote string 2&quot; end messa...
how to check and set max_allowed_packet mysql variable [duplicate]
...ast mysql version 5.5.
Recently setup an instance on AWS EC2 with Drupal and Solr Search Engine, which required 32M max_allowed_packet. It you set the value under [mysqld_safe] (which is default settings came with the mysql installation) mode in /etc/my.cnf, it did no work. I did not dig into the ...
Will Emacs make me a better programmer? [closed]
...re-paying the start-up cost of learning how to modify it to suit my needs, and modifying myself to its needs.
But other people do things differently, and as they say "That's OK".
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Emacs, switch to previous window
...ecify how many windows to move by inserting a numeric argument between C-u and the command, as in C-u 2 C-x o. (C-- is a shortcut for C-u - 1)
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Count occurrences of a char in plain text file
...o f <file> | wc -l
Note: Besides much easier to remember/duplicate and customize, this is about three times (sorry, edit! botched the first test) faster than Vereb's answer.
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